Anyone tried iPhone GPS aloft?
I've just been trying to record the paths of my circuits with an app on my iPhone... the results have been pretty abysmal (not my circuits mind you, just the data recorded by the iPhone).
It's odd because on the ground it seems to work fairly well, but in the air it's as though it just keeps loosing the plot, and makes my circuits looks like a drunk spider has walked through an inkwell and staggered over the map.
One day I'll buy a proper GPS (I wouldn't dream of using the iPhone for any kind of navaid), but just wondered if anyone else had any success using iPhone GPS aloft?